From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933517AbcE3QEY (ORCPT ); Mon, 30 May 2016 12:04:24 -0400 Received: from mga03.intel.com ([134.134.136.65]:60251 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933158AbcE3QEX (ORCPT ); Mon, 30 May 2016 12:04:23 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.26,390,1459839600"; d="scan'208";a="817796648" Date: Mon, 30 May 2016 09:04:02 -0700 From: Andi Kleen To: Arnaldo Carvalho de Melo Cc: Andi Kleen , jolsa@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/4] perf stat: Basic support for TopDown in perf stat Message-ID: <20160530160402.GI22049@tassilo.jf.intel.com> References: <1464119559-17203-1-git-send-email-andi@firstfloor.org> <20160530160155.GQ8857@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160530160155.GQ8857@kernel.org> User-Agent: Mutt/1.6.1 (2016-04-27) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Which is a Broadwell-U, dual-core, 14 nm. > > [root@jouet linux]# echo 0 > /proc/sys/kernel/nmi_watchdog > [root@jouet linux]# perf stat --topdown -a usleep 1 > System does not support topdown > [root@jouet linux]# cat /proc/sys/kernel/nmi_watchdog > 0 > [root@jouet linux]# > > Please advise. You don't have the kernel patches? They're in PeterZ's tree, but not yet in tip https://git.kernel.org/cgit/linux/kernel/git/peterz/queue.git/log/?h=perf/core -Andi